
基本信息:
- 专利标题: 利用炉顶煤气再循环的高炉
- 专利标题(英):Blast furnace with top-gas recycle
- 申请号:CN201280065379.3 申请日:2012-12-27
- 公开(公告)号:CN104412056A 公开(公告)日:2015-03-11
- 发明人: J-C·加扎-达维拉 , J-O·贝切拉-诺沃亚 , P-E·杜亚特-埃斯卡雷诺
- 申请人: 伊尔技术有限公司
- 申请人地址: 墨西哥新莱昂州
- 专利权人: 伊尔技术有限公司
- 当前专利权人: 伊尔技术有限公司
- 当前专利权人地址: 墨西哥新莱昂州
- 代理机构: 中国专利代理(香港)有限公司
- 代理人: 李连涛; 杨思捷
- 优先权: 61/580607 2011.12.27 US
- 国际申请: PCT/IB2012/003116 2012.12.27
- 国际公布: WO2013/110969 EN 2013.08.01
- 进入国家日期: 2014-06-27
- 主分类号: F27B1/10
- IPC分类号: F27B1/10 ; C21B5/00 ; C21B5/06 ; F27B1/18 ; F27B1/24 ; F27D17/00 ; C10K1/00 ; C10K1/02 ; C10K3/04
A blast furnace where coke Is combusted with oxygen, Instead of air, and where a top gas comprising CO, CO2, H2, and without excess nitrogen is withdrawn from the upper part of the blast furnace, cleaned of dust, the H2/CO volume ratio adjusted to between 1.5 to 4.0 in a water shift reactor, water and CO2 are removed (increasing its reduction potential), heated to a temperature above 850 DEG C, and fed back to the blast furnace above where iron starts melting (thereby Increasing the amount of metallic iron reaching the dead-man zone and decreasing the amount of coke used for reduction). Also carbon deposit problems caused by heating the CO-containing recycled gas are minimized by on-line cleaning of the heater tubes with steam without significantly affecting the reduction potential of the recycled reducing gas.
IPC结构图谱:
F | 机械工程;照明;加热;武器;爆破 |
--F27 | 炉;窑;烘烤炉;蒸馏炉 |
----F27B | 一般馏炉、窑、烘烤炉或蒸馏炉;开式烧结设备或类似设备 |
------F27B1/00 | 井式炉或类似立式或基本立式的炉 |
--------F27B1/10 | .零部件、附件或这类炉所特有装置 |